This looks very much like a render with too much light and no shadows. As HalfDragon says, you can select your lights in the Scene tab, just like a character or prop, and if you scroll all the way to the bottom you'll see the intensity slider. I try not to run more than 50-60% intensity from any one light. To add shadows, go to the "Shadow Type" dropdown and select your preferred method. I like 3Delight but it's really a fairly minor difference. Then make sure your render tab is set to do a Software Render.

Here's a decent little tutorial on lights and cameras:

digilander.libero.it/maclean/DStutorial.htm

The DAZ version is slightly outdated, so some of the screenshots may look odd to you, but the information is still good.

Hope this helps!